Malicious PDF — malware analysis report

Static analysis result for SHA-256 11daba52d27fa780…

MALICIOUS

PDF

37.2 KB Created: 2021-05-22 16:35:02 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-16
MD5: 3e6c899844b80343e7cf88469eb11d83 SHA-1: b890c233f97be14c70ccd058f5684d2aa6137154 SHA-256: 11daba52d27fa780628b2a8d3d122c1b2f0ec55ddbfdb635282a685e91742900
180 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF contains multiple embedded URLs that redirect to malicious infrastructure, specifically advertising a "free Minecraft account and password game hack." The ML classifier also flagged this PDF as malicious. The presence of these lures and the redirection to known malicious domains strongly suggests a phishing or malware distribution attempt, likely delivered as a spearphishing attachment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9447

Heuristics 5

  • PDF links to a 'free generator / game hack' redirector critical PDF_GAME_HACK_REDIRECT_LURE
    PDF's clickable action targets a redirector of the form /app/<id>/<slug>-game-hack — the landing-page shape of a large SEO 'free spins / generator / game hack' lure family that funnels victims through rotating disposable hosts to a malware/scam payload. The multi-link variants also trip ML/link-farm rules; this catches the single-link variants that otherwise score clean. CRITICAL on its own: the /app/<id>/<slug>-game-hack path shape is unambiguous scam infra, and the host rotates so a host-list match can't be relied on.
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://netcdn.xyz/app/479516143/free-minecraft-account-and-password-game-hack In PDF document text
    • https://pompesfunebresleveque.fr/images/tiktok-free-real-followers_GM835599320.pdfIn PDF document text
    • https://pompesfunebresleveque.fr/images/free-spin-online-tool-coin-master_GM406889139.pdfIn PDF document text
    • https://pompesfunebresleveque.fr/images/coin-master-claim-free-spins_GM406889139.pdfIn PDF document text
    • https://pompesfunebresleveque.fr/images/wahoo-gaming-co-free-robux_GM431946152.pdfIn PDF document text
    • https://pompesfunebresleveque.fr/images/free-tiktok-likes-no-survey_GM835599320.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off000035aa.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x35AA 25628 bytes
SHA-256: 2743dc95546d788810aa6fa9a66f6568e5dadda13ec3be10580a7a98425e3796
font_01_sfnt_off0000701a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x701A 18344 bytes
SHA-256: 071cc331fbe0dfc1a6c0e7c1f1383f87707aabc4deba919dc9b38235f2b9b975

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